Fedora 21 QEMM wont start after update

[Robert Moskowitz]

On 07/21/2015 07:14 PM, Suvayu Ali wrote:
> On Tue, Jul 21, 2015 at 06:38:57PM +0200, Robert Moskowitz wrote:
>> Do I need to reboot first or is this something more than a reboot?
> Maybe just restart libvirtd?
>

systemctl restart libvirtd

and still:

Unable to connect to libvirt.

authentication failed: access denied by policy

Libvirt URI is: qemu:///system

Traceback (most recent call last):
   File "/usr/share/virt-manager/virtManager/connection.py", line 963, 
in _do_open
     self._backend.open(self._do_creds_password)
   File "/usr/share/virt-manager/virtinst/connection.py", line 159, in open
     open_flags)
   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 105, in 
openAuth
     if ret is None:raise libvirtError('virConnectOpenAuth() failed')
libvirtError: authentication failed: access denied by policy